I was missing the define, so I added it.
Here's the new patch with it.

Le lundi 17 janvier 2022 à 17:18 -0500, Antoni Boucher via Jit a
écrit :
> Hi.
> This patch add support for bitcasts in libgccjit.
> 
> It passes the JIT tests, but since I added a function in tree.c, I
> wonder if I should run the whole testsuite.
> 
> David, you can now disregard my question in my email about 128-bit
> integers regarding my issue with initialize_sizetypes being called
> multiple times because this patch fix this issue.
> I turns out there was a cache of types that needed to be cleared when
> you initialize the JIT.
> 
> The check for sizes is pending, because it requires the updates to
> get_size I made in my patch for 128-bit integers.
> 
> Thanks for the review!